dlls/ntdll/thread.c

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <sys/types.h>
  25 #ifdef HAVE_SYS_MMAN_H
  26 #include <sys/mman.h>
  27 #endif
  28 #ifdef HAVE_SYS_TIMES_H
  29 #include <sys/times.h>
  30 #endif
  31
  32 #include "ntstatus.h"
  33 #include "thread.h"
  34 #include "winternl.h"
  35 #include "wine/library.h"
  36 #include "wine/server.h"
  37 #include "wine/pthread.h"
  38 #include "wine/debug.h"
  39 #include "ntdll_misc.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  42
  43 /* info passed to a starting thread */
  44 struct startup_info
  45 {
  46     struct wine_pthread_thread_info pthread_info;
  47     PRTL_THREAD_START_ROUTINE       entry_point;
  48     void                           *entry_arg;
  49 };
  50
  51 static PEB peb;
  52 static PEB_LDR_DATA ldr;
  53 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  54 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  55 static RTL_BITMAP tls_bitmap;
  56 static RTL_BITMAP tls_expansion_bitmap;
  57 static LIST_ENTRY tls_links;
  58 static size_t sigstack_total_size;
  59
  60 struct wine_pthread_functions pthread_functions = { NULL };
  61
  62 /***********************************************************************
  63  *           init_teb
  64  */
  65 static inline NTSTATUS init_teb( TEB *teb )
  66 {
  67     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  68
  69     teb->Tib.ExceptionList = (void *)~0UL;
  70     teb->Tib.StackBase     = (void *)~0UL;
  71     teb->Tib.Self          = &teb->Tib;
  72     teb->Peb               = &peb;
  73     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
  74     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  75
  76     if (!(thread_data->teb_sel = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
  77     thread_data->request_fd = -1;
  78     thread_data->reply_fd   = -1;
  79     thread_data->wait_fd[0] = -1;
  80     thread_data->wait_fd[1] = -1;
  81
  82     return STATUS_SUCCESS;
  83 }
  84
  85
  86 /***********************************************************************
  87  *           free_teb
  88  */
  89 static inline void free_teb( TEB *teb )
  90 {
  91     SIZE_T size = 0;
  92     void *addr = teb;
  93     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  94
  95     NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
  96     wine_ldt_free_fs( thread_data->teb_sel );
  97     munmap( teb, sigstack_total_size );
  98 }
  99
 100
 101 /***********************************************************************
 102  *           thread_init
 103  *
 104  * Setup the initial thread.
 105  *
 106  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 107  */
 108 void thread_init(void)
 109 {
 110     TEB *teb;
 111     void *addr;
 112     SIZE_T info_size;
 113     struct ntdll_thread_data *thread_data;
 114     struct wine_pthread_thread_info thread_info;
 115     static struct debug_info debug_info;  /* debug info for initial thread */
 116
 117     peb.NumberOfProcessors = 1;
 118     peb.ProcessParameters  = &params;
 119     peb.TlsBitmap          = &tls_bitmap;
 120     peb.TlsExpansionBitmap = &tls_expansion_bitmap;
 121     peb.LdrData            = &ldr;
 122     params.CurrentDirectory.DosPath.Buffer = current_dir;
 123     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 124     RtlInitializeBitMap( &tls_bitmap, peb.TlsBitmapBits, sizeof(peb.TlsBitmapBits) * 8 );
 125     RtlInitializeBitMap( &tls_expansion_bitmap, peb.TlsExpansionBitmapBits,
 126                          sizeof(peb.TlsExpansionBitmapBits) * 8 );
 127     InitializeListHead( &ldr.InLoadOrderModuleList );
 128     InitializeListHead( &ldr.InMemoryOrderModuleList );
 129     InitializeListHead( &ldr.InInitializationOrderModuleList );
 130     InitializeListHead( &tls_links );
 131
 132     sigstack_total_size = get_signal_stack_total_size();
 133     thread_info.teb_size = sigstack_total_size;
 134     VIRTUAL_alloc_teb( &addr, thread_info.teb_size, TRUE );
 135     teb = addr;
 136     init_teb( teb );
 137     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 138     thread_data->debug_info = &debug_info;
 139     InsertHeadList( &tls_links, &teb->TlsLinks );
 140
 141     thread_info.stack_base = NULL;
 142     thread_info.stack_size = 0;
 143     thread_info.teb_base   = teb;
 144     thread_info.teb_sel    = thread_data->teb_sel;
 145     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 146     pthread_functions.init_current_teb( &thread_info );
 147     pthread_functions.init_thread( &thread_info );
 148
 149     debug_info.str_pos = debug_info.strings;
 150     debug_info.out_pos = debug_info.output;
 151     debug_init();
 152
 153     /* setup the server connection */
 154     server_init_process();
 155     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 156
 157     /* create the process heap */
 158     if (!(peb.ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 159     {
 160         MESSAGE( "wine: failed to create the process heap\n" );
 161         exit(1);
 162     }
 163
 164     /* allocate user parameters */
 165     if (info_size)
 166     {
 167         RTL_USER_PROCESS_PARAMETERS *params = NULL;
 168
 169         if (NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 170                                      MEM_COMMIT, PAGE_READWRITE ) == STATUS_SUCCESS)
 171         {
 172             params->AllocationSize = info_size;
 173             NtCurrentTeb()->Peb->ProcessParameters = params;
 174         }
 175     }
 176     else
 177     {
 178         /* This is wine specific: we have no parent (we're started from unix)
 179          * so, create a simple console with bare handles to unix stdio
 180          */
 181         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  TRUE, &params.hStdInput );
 182         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, TRUE, &params.hStdOutput );
 183         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, TRUE, &params.hStdError );
 184     }
 185 }
 186
 187
 188 /***********************************************************************
 189  *           start_thread
 190  *
 191  * Startup routine for a newly created thread.
 192  */
 193 static void start_thread( struct wine_pthread_thread_info *info )
 194 {
 195     TEB *teb = info->teb_base;
 196     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 197     struct startup_info *startup_info = (struct startup_info *)info;
 198     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 199     void *arg = startup_info->entry_arg;
 200     struct debug_info debug_info;
 201     SIZE_T size;
 202
 203     debug_info.str_pos = debug_info.strings;
 204     debug_info.out_pos = debug_info.output;
 205     thread_data->debug_info = &debug_info;
 206
 207     pthread_functions.init_current_teb( info );
 208     SIGNAL_Init();
 209     server_init_thread( info->pid, info->tid, func );
 210     pthread_functions.init_thread( info );
 211
 212     /* allocate a memory view for the stack */
 213     size = info->stack_size;
 214     teb->DeallocationStack = info->stack_base;
 215     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 216                              &size, MEM_SYSTEM, PAGE_READWRITE );
 217     /* limit is lower than base since the stack grows down */
 218     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 219     teb->Tib.StackLimit = info->stack_base;
 220
 221     /* setup the guard page */
 222     size = 1;
 223     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size,
 224                             PAGE_READWRITE | PAGE_GUARD, NULL );
 225     RtlFreeHeap( GetProcessHeap(), 0, info );
 226
 227     RtlAcquirePebLock();
 228     InsertHeadList( &tls_links, &teb->TlsLinks );
 229     RtlReleasePebLock();
 230
 231     func( arg );
 232 }
 233
 234
 235 /***********************************************************************
 236  *              RtlCreateUserThread   (NTDLL.@)
 237  */
 238 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 239                                      BOOLEAN suspended, PVOID stack_addr,
 240                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 241                                      PRTL_THREAD_START_ROUTINE start, void *param,
 242                                      HANDLE *handle_ptr, CLIENT_ID *id )
 243 {
 244     struct ntdll_thread_data *thread_data = NULL;
 245     struct startup_info *info = NULL;
 246     void *addr;
 247     HANDLE handle = 0;
 248     TEB *teb;
 249     DWORD tid = 0;
 250     int request_pipe[2];
 251     NTSTATUS status;
 252
 253     if( ! is_current_process( process ) )
 254     {
 255         ERR("Unsupported on other process\n");
 256         return STATUS_ACCESS_DENIED;
 257     }
 258
 259     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 260     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 261     wine_server_send_fd( request_pipe[0] );
 262
 263     SERVER_START_REQ( new_thread )
 264     {
 265         req->suspend    = suspended;
 266         req->inherit    = 0;  /* FIXME */
 267         req->request_fd = request_pipe[0];
 268         if (!(status = wine_server_call( req )))
 269         {
 270             handle = reply->handle;
 271             tid = reply->tid;
 272         }
 273         close( request_pipe[0] );
 274     }
 275     SERVER_END_REQ;
 276
 277     if (status) goto error;
 278
 279     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 280     {
 281         status = STATUS_NO_MEMORY;
 282         goto error;
 283     }
 284
 285     info->pthread_info.teb_size = sigstack_total_size;
 286     if ((status = VIRTUAL_alloc_teb( &addr, info->pthread_info.teb_size, FALSE ))) goto error;
 287     teb = addr;
 288     if ((status = init_teb( teb ))) goto error;
 289
 290     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 291     teb->ClientId.UniqueThread  = (HANDLE)tid;
 292
 293     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 294     thread_data->request_fd  = request_pipe[1];
 295
 296     info->pthread_info.teb_base = teb;
 297     info->pthread_info.teb_sel  = thread_data->teb_sel;
 298
 299     if (!stack_reserve || !stack_commit)
 300     {
 301         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 302         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 303         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 304     }
 305     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 306     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 307     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 308
 309     info->pthread_info.stack_base = NULL;
 310     info->pthread_info.stack_size = stack_reserve;
 311     info->pthread_info.entry      = start_thread;
 312     info->entry_point             = start;
 313     info->entry_arg               = param;
 314
 315     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 316     {
 317         status = STATUS_NO_MEMORY;
 318         goto error;
 319     }
 320
 321     if (id) id->UniqueThread = (HANDLE)tid;
 322     if (handle_ptr) *handle_ptr = handle;
 323     else NtClose( handle );
 324
 325     return STATUS_SUCCESS;
 326
 327 error:
 328     if (thread_data) wine_ldt_free_fs( thread_data->teb_sel );
 329     if (addr)
 330     {
 331         SIZE_T size = 0;
 332         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 333     }
 334     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 335     if (handle) NtClose( handle );
 336     close( request_pipe[1] );
 337     return status;
 338 }
 339
 340
 341 /***********************************************************************
 342  *           RtlExitUserThread  (NTDLL.@)
 343  */
 344 void WINAPI RtlExitUserThread( ULONG status )
 345 {
 346     LdrShutdownThread();
 347     server_exit_thread( status );
 348 }
 349
 350
 351 /***********************************************************************
 352  *              NtOpenThread   (NTDLL.@)
 353  *              ZwOpenThread   (NTDLL.@)
 354  */
 355 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 356                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 357 {
 358     NTSTATUS ret;
 359
 360     SERVER_START_REQ( open_thread )
 361     {
 362         req->tid     = (thread_id_t)id->UniqueThread;
 363         req->access  = access;
 364         req->inherit = attr && (attr->Attributes & OBJ_INHERIT);
 365         ret = wine_server_call( req );
 366         *handle = reply->handle;
 367     }
 368     SERVER_END_REQ;
 369     return ret;
 370 }
 371
 372
 373 /******************************************************************************
 374  *              NtSuspendThread   (NTDLL.@)
 375  *              ZwSuspendThread   (NTDLL.@)
 376  */
 377 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 378 {
 379     NTSTATUS ret;
 380
 381     SERVER_START_REQ( suspend_thread )
 382     {
 383         req->handle = handle;
 384         if (!(ret = wine_server_call( req ))) *count = reply->count;
 385     }
 386     SERVER_END_REQ;
 387     return ret;
 388 }
 389
 390
 391 /******************************************************************************
 392  *              NtResumeThread   (NTDLL.@)
 393  *              ZwResumeThread   (NTDLL.@)
 394  */
 395 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 396 {
 397     NTSTATUS ret;
 398
 399     SERVER_START_REQ( resume_thread )
 400     {
 401         req->handle = handle;
 402         if (!(ret = wine_server_call( req ))) *count = reply->count;
 403     }
 404     SERVER_END_REQ;
 405     return ret;
 406 }
 407
 408
 409 /******************************************************************************
 410  *              NtAlertResumeThread   (NTDLL.@)
 411  *              ZwAlertResumeThread   (NTDLL.@)
 412  */
 413 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 414 {
 415     FIXME( "stub: should alert thread %p\n", handle );
 416     return NtResumeThread( handle, count );
 417 }
 418
 419
 420 /******************************************************************************
 421  *              NtAlertThread   (NTDLL.@)
 422  *              ZwAlertThread   (NTDLL.@)
 423  */
 424 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 425 {
 426     FIXME( "stub: %p\n", handle );
 427     return STATUS_NOT_IMPLEMENTED;
 428 }
 429
 430
 431 /******************************************************************************
 432  *              NtTerminateThread  (NTDLL.@)
 433  *              ZwTerminateThread  (NTDLL.@)
 434  */
 435 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 436 {
 437     NTSTATUS ret;
 438     BOOL self, last;
 439
 440     SERVER_START_REQ( terminate_thread )
 441     {
 442         req->handle    = handle;
 443         req->exit_code = exit_code;
 444         ret = wine_server_call( req );
 445         self = !ret && reply->self;
 446         last = reply->last;
 447     }
 448     SERVER_END_REQ;
 449
 450     if (self)
 451     {
 452         if (last) exit( exit_code );
 453         else server_abort_thread( exit_code );
 454     }
 455     return ret;
 456 }
 457
 458
 459 /******************************************************************************
 460  *              NtQueueApcThread  (NTDLL.@)
 461  */
 462 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 463                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 464 {
 465     NTSTATUS ret;
 466     SERVER_START_REQ( queue_apc )
 467     {
 468         req->handle = handle;
 469         req->user   = 1;
 470         req->func   = func;
 471         req->arg1   = (void *)arg1;
 472         req->arg2   = (void *)arg2;
 473         req->arg3   = (void *)arg3;
 474         ret = wine_server_call( req );
 475     }
 476     SERVER_END_REQ;
 477     return ret;
 478 }
 479
 480
 481 /***********************************************************************
 482  *              NtSetContextThread  (NTDLL.@)
 483  *              ZwSetContextThread  (NTDLL.@)
 484  */
 485 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 486 {
 487     NTSTATUS ret;
 488
 489     SERVER_START_REQ( set_thread_context )
 490     {
 491         req->handle = handle;
 492         req->flags  = context->ContextFlags;
 493         wine_server_add_data( req, context, sizeof(*context) );
 494         ret = wine_server_call( req );
 495     }
 496     SERVER_END_REQ;
 497     return ret;
 498 }
 499
 500
 501 /***********************************************************************
 502  *              NtGetContextThread  (NTDLL.@)
 503  *              ZwGetContextThread  (NTDLL.@)
 504  */
 505 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 506 {
 507     NTSTATUS ret;
 508
 509     SERVER_START_REQ( get_thread_context )
 510     {
 511         req->handle = handle;
 512         req->flags = context->ContextFlags;
 513         wine_server_add_data( req, context, sizeof(*context) );
 514         wine_server_set_reply( req, context, sizeof(*context) );
 515         ret = wine_server_call( req );
 516     }
 517     SERVER_END_REQ;
 518     return ret;
 519 }
 520
 521
 522 /******************************************************************************
 523  *              NtQueryInformationThread  (NTDLL.@)
 524  *              ZwQueryInformationThread  (NTDLL.@)
 525  */
 526 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 527                                           void *data, ULONG length, ULONG *ret_len )
 528 {
 529     NTSTATUS status;
 530
 531     switch(class)
 532     {
 533     case ThreadBasicInformation:
 534         {
 535             THREAD_BASIC_INFORMATION info;
 536
 537             SERVER_START_REQ( get_thread_info )
 538             {
 539                 req->handle = handle;
 540                 req->tid_in = 0;
 541                 if (!(status = wine_server_call( req )))
 542                 {
 543                     info.ExitStatus             = reply->exit_code;
 544                     info.TebBaseAddress         = reply->teb;
 545                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 546                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 547                     info.AffinityMask           = reply->affinity;
 548                     info.Priority               = reply->priority;
 549                     info.BasePriority           = reply->priority;  /* FIXME */
 550                 }
 551             }
 552             SERVER_END_REQ;
 553             if (status == STATUS_SUCCESS)
 554             {
 555                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 556                 if (ret_len) *ret_len = min( length, sizeof(info) );
 557             }
 558         }
 559         return status;
 560     case ThreadTimes:
 561         {
 562             KERNEL_USER_TIMES   kusrt;
 563             /* We need to do a server call to get the creation time or exit time */
 564             /* This works on any thread */
 565             SERVER_START_REQ( get_thread_info )
 566             {
 567                 req->handle = handle;
 568                 req->tid_in = 0;
 569                 status = wine_server_call( req );
 570                 if (status == STATUS_SUCCESS)
 571                 {
 572                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 573                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 574                 }
 575             }
 576             SERVER_END_REQ;
 577             if (status == STATUS_SUCCESS)
 578             {
 579                 /* We call times(2) for kernel time or user time */
 580                 /* We can only (portably) do this for the current thread */
 581                 if (handle == GetCurrentThread())
 582                 {
 583                     struct tms time_buf;
 584                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 585
 586                     times(&time_buf);
 587                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 588                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 589                 }
 590                 else
 591                 {
 592                     kusrt.KernelTime.QuadPart = 0;
 593                     kusrt.UserTime.QuadPart = 0;
 594                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 595                 }
 596                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 597                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 598             }
 599         }
 600         return status;
 601     case ThreadPriority:
 602     case ThreadBasePriority:
 603     case ThreadAffinityMask:
 604     case ThreadImpersonationToken:
 605     case ThreadDescriptorTableEntry:
 606     case ThreadEnableAlignmentFaultFixup:
 607     case ThreadEventPair_Reusable:
 608     case ThreadQuerySetWin32StartAddress:
 609     case ThreadZeroTlsCell:
 610     case ThreadPerformanceCount:
 611     case ThreadAmILastThread:
 612     case ThreadIdealProcessor:
 613     case ThreadPriorityBoost:
 614     case ThreadSetTlsArrayAddress:
 615     case ThreadIsIoPending:
 616     default:
 617         FIXME( "info class %d not supported yet\n", class );
 618         return STATUS_NOT_IMPLEMENTED;
 619     }
 620 }
 621
 622
 623 /******************************************************************************
 624  *              NtSetInformationThread  (NTDLL.@)
 625  *              ZwSetInformationThread  (NTDLL.@)
 626  */
 627 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 628                                         LPCVOID data, ULONG length )
 629 {
 630     NTSTATUS status;
 631     switch(class)
 632     {
 633     case ThreadZeroTlsCell:
 634         if (handle == GetCurrentThread())
 635         {
 636             LIST_ENTRY *entry;
 637             DWORD index;
 638
 639             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 640             index = *(const DWORD *)data;
 641             if (index < TLS_MINIMUM_AVAILABLE)
 642             {
 643                 RtlAcquirePebLock();
 644                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 645                 {
 646                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 647                     teb->TlsSlots[index] = 0;
 648                 }
 649                 RtlReleasePebLock();
 650             }
 651             else
 652             {
 653                 index -= TLS_MINIMUM_AVAILABLE;
 654                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 655                     return STATUS_INVALID_PARAMETER;
 656                 RtlAcquirePebLock();
 657                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 658                 {
 659                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 660                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 661                 }
 662                 RtlReleasePebLock();
 663             }
 664             return STATUS_SUCCESS;
 665         }
 666         FIXME( "ZeroTlsCell not supported on other threads\n" );
 667         return STATUS_NOT_IMPLEMENTED;
 668
 669     case ThreadImpersonationToken:
 670         {
 671             const HANDLE *phToken = data;
 672             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
 673             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
 674             SERVER_START_REQ( set_thread_info )
 675             {
 676                 req->handle   = handle;
 677                 req->token    = *phToken;
 678                 req->mask     = SET_THREAD_INFO_TOKEN;
 679                 status = wine_server_call( req );
 680             }
 681             SERVER_END_REQ;
 682         }
 683         return status;
 684     case ThreadBasePriority:
 685         {
 686             const DWORD *pprio = data;
 687             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 688             SERVER_START_REQ( set_thread_info )
 689             {
 690                 req->handle   = handle;
 691                 req->priority = *pprio;
 692                 req->mask     = SET_THREAD_INFO_PRIORITY;
 693                 status = wine_server_call( req );
 694             }
 695             SERVER_END_REQ;
 696         }
 697         return status;
 698     case ThreadBasicInformation:
 699     case ThreadTimes:
 700     case ThreadPriority:
 701     case ThreadAffinityMask:
 702     case ThreadDescriptorTableEntry:
 703     case ThreadEnableAlignmentFaultFixup:
 704     case ThreadEventPair_Reusable:
 705     case ThreadQuerySetWin32StartAddress:
 706     case ThreadPerformanceCount:
 707     case ThreadAmILastThread:
 708     case ThreadIdealProcessor:
 709     case ThreadPriorityBoost:
 710     case ThreadSetTlsArrayAddress:
 711     case ThreadIsIoPending:
 712     default:
 713         FIXME( "info class %d not supported yet\n", class );
 714         return STATUS_NOT_IMPLEMENTED;
 715     }
 716 }
 717
 718
 719 /**********************************************************************
 720  *           NtCurrentTeb   (NTDLL.@)
 721  */
 722 #if defined(__i386__) && defined(__GNUC__)
 723
 724 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
 725
 726 #elif defined(__i386__) && defined(_MSC_VER)
 727
 728 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
 729
 730 #else
 731
 732 /**********************************************************************/
 733
 734 TEB * WINAPI NtCurrentTeb(void)
 735 {
 736     return pthread_functions.get_current_teb();
 737 }
 738
 739 #endif  /* __i386__ */